Nut



. April 20,1926. Q I

* D. E. WlLLlAMS NUT Filed Jan. 26, 1925 INV ENTOR.

ATTORNEY Patented Apr. 20, 1926.

UNITEDSTATES P ATENT, OFFICE.

NUT.

Application filed January 26, 1925. Serial No. 4,766.

To all whom it may concern:

Be itknown that 1, DAVID E. WILLIAMS,

a citizen of the United in the county ()akland, State of States, residing at rovenients in Nuts, of 1s a specificatlon.

This invention relates broadly to nuts, and more particularly to one-piece lock nuts whose functions are to prevent bolts and nuts from working nut of today,

having as anln device for holding the nut loose under all conditegral part thereof a locking permanently in place when jammed to final holding. positior Another obj shall be in th tact side of th shall lie in the cot is that the locking device nature of a 'ly formed on the face of the tongue, and for very small nuts one tongue. but for the general run of nuts tongues and for very ree or more tongues.

washer spiralnut as a spring large nuts bject is that the face or conshall be at right a it is desired that same lane oots of all the tongues and which plane the axis of the stress throughwhen the latter ngles to object is, in cases where the nut shall have the locking features and be removable at times, that the extremity of the tongue on its face side shall be rounded to off of the nut with surfaces.

permit the backing outin ury to the binding I attain the above objects by the nov l construction of objects and adv 5 appear in the accompanying Figure -1 is a sid on a bolt, and Fi improved nut, and other antages of the invention will subjoined description of the sheet of drawings, in which:

turned through an Fig. 3 is a 1, and Fig. 4

the nut on the li Fig. 5 is a from the face face pers side.

no H of Fig. 3.

e view of tlfe nut screwed g. 2 is a view of the nut pectiveview of the nut of Alameda and California, have invented certain new and useful In; which the following their outside faces are i Fig. 6 is a view of the bolt and nut of Fig. 1 in service;-and

Fig. 7 shows a modification of the nut.

Adverting to the drawings and figures thereof: The numeral 8 represents a common bolt'havingthe customary threads 9, and upon which threaded bolt is mounted my invention which comprises a perforated block 10, hexagonal in shape in this instance, having threads 11 complementary to the bolt, and upon the face side of the block or nut is formed as a homogeneous integral part thereof the lock washer-of my device, which in service performs the functions of the. present jam nut, two or more piece lock nut, or separate lock washer interposed between the work and the common nut.

As illustrated in the present case, the lock washer of my device consists of a pair of similar tongues 12 projecting axially from the face of the'nut, and preferably spirally formed as shown throughout the figures. 14 indicates the projecting root of the tongue and 15 root, and which face side 15 of each root lies in the same plane and parallel with the face plane 16 of thenut, and consequently e same is at right angles to the axis of the nut and also to the bolt. p

Fig. 1 shows to advantage the root as a solid continuation of the nut, and at 17 the tongue spirally projects from the root in the direction of the axis of the nut from the parallel face 15 of the root.

From the fi and especially Fig. 3, it will be noted that the tongues lie within the confines of the longitudinal surfaces Tof the nut, hence, no interferenceis encountered in the application and tightening of the nut to the work. The tongues form a collar adapted to surround the bolt but not to touch the same, for the purpose and best shown at 18, Fig. 4E. The root ofeach tongue is separated from the end of the adjacent tongue by a kerf 19 and the tongues are" separated from the nut by kerfs 20,.' and the tips of the tongues at preferably angular as shown at 21, Fig. 1.

The nut ismade of a chosen quality of steel, the tongues formed and the same tempered uniformly to a elasticity and resiliency.

In practice, thenut is tightened on the degree for suitable the face side of the said.

as a clearance is provided work suchthat the plurality of tongue tips may dothe binding and holding 1n some cases, or the tightening may be continued until the faces 15 of the roots contact the work, and at which time the whole face of the lock washer is in contacting engagement.

In Fig, 7 I show a modification of my nut insomuch that the tips of the tongues at the outside faces are rounded as at 22, to permit occasional removal of the nut when desired for certain classes of .work. The said tips being rounded prevent gou ing or other injury to the work and may e used over and over again.

For aeroplane, automobile and other vibratory "work the use of the nuts havin the sharp cornered tongues are preferre as generally they are for permanent application.

From the foregoing description taken in connection with the accompanying drawings the "advantages of the construction an method of operation will be readily under stood by those skilled in the art to which the invention appertains, and while I have described the principle of operation, to-

gether with'the device which I now consider to be the best embodiment thereof, I desire to have it understood that the device shown is merely illustrative and that such changes may be made, when desired, as fall within the scope of the appended claim.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent of the United States, is the following: 1

A nut having a lock washer formed on its face, said lock washer comprising a plurality of resilient, spirally formed tongues,'

each'tongue pro ec-t1ng axially from a root integral with the nut, each root being provided with a face side parallel with the face of the nut and at right angles to the axis of the nut, the face si es of the roots being in the same plane; each tongue being separated from the nut by one kerf, and the root. of each tonfgue being separated from the end of the a jacent tongue by another kerf and the edge of each tongue first engaging the work (being rounded to facilitate removal of the nut. I I

In testimony whereof I afiix my signature.

DAVID E. WILLIAMS. 

